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GB/T 23935-2009Design of cylindrical helical springs (English PDF)

圆柱螺旋弹簧设计计算

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

March 16, 2009

Implementation date

November 1, 2009

Scope

GB/T 23935-2009 is the English-translated version of 圆柱螺旋弹簧设计计算.

GB/T 23935-2009 is the Chinese standard "Design of cylindrical helical springs". Its scope clause reads: This standard specifies the design of cylindrical helical springs of circular cross-section materials.

This standard is applicable to cylindrical helical compression springs, extension springs, and torsion springs (hereinafter referred to as springs) of circular cross-section materials.

This standard is not applicable to springs of non-circular cross-section materials, special materials and special properties. Its clauses include parameter names and codes of the springs; load type and allowable stress of springs.

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Document preview — GB/T 23935-2009

National Standard of the People's Republic of China

ICS: 21.160
Classification: J 26
Replacing: GB/T 1239.6-1992

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword i
1 Scope
2 Normative references
3 Parameter names and codes of the springs
4 Materials
5 Load type and allowable stress of springs
6 Design of cylindrical helical compression springs
7 Design of cylindrical helical tension springs
8 Design of cylindrical helical torsion springs
Annex A (Informative) Shear modulus G, elastic modulus E and recommended service temperature of spring material
Annex B (Informative) Allowable shear stress and bending stress of materials
Annex C (Informative) Design Example of cylindrical helical compression spring
Annex D (Informative) Design example of cylindrical helical tension spring
Annex E (Informative) Design example of cylindrical helical torsion spring
Annex F

1 Scope

This standard specifies the design of cylindrical helical springs of circular cross-section materials.

This standard is applicable to cylindrical helical compression springs, extension springs, and torsion springs (hereinafter referred to as springs) of circular cross-section materials.

This standard is not applicable to springs of non-circular cross-section materials, special materials and special properties.

2 Normative references

The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections) to, or revisions, of any of these publications do not apply. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition applies.

GB/T 1222 Spring steels

GB/T 1239.1 Cold coiled helical springs technical specifications - Part 1: Extension spring

GB/T 1239.2 Cold coiled helical springs technical specifications - Part 2: Compressions spring

GB/T 1239.3 Cold coiled helical springs technical specifications - Part 3: Torsion spring

GB/T 1358 Helical spring seriate sizes

GB/T 1805 Nomenclature of springs

GB/T 4357-1989 Carbon spring steel wires (neq JIS G 3521:1984)

GB/T 18983 Oil-hardened and tempered steel wire for mechanical springs (GB/T 18983-2003, ISO/FDIS 8458-3:1992, MOD)

GB/T 21652 Copper and copper alloy wire

GB/T 23934-2009 Hot coiled helical compression springs - Technical specifications

YB/T 5311 Carbon spring steel wire for significant use

YB/T 5318 Alloy spring steel wires

YB(T)11 Stainless steel wires for spring

YS/T 571 Copper-beryllium alloy wires

3 Parameter names and codes of the springs

For the purpose of this standard, the terms and symbols specified in GB/T 1805 and Table 1 apply.

Table 1

5 Load type and allowable stress of springs

5.1 Static load and dynamic load

5.1.1 Static load

a) Constant load;

b) Variable load, but with cycle times N<104 times.

5.1.2 Dynamic load

The load is variable, with cycle times N>=104 times.

According to cycle times, the dynamic load is divided into:

a) Finite fatigue life: The load cycle times of cold coiled springs N>=104~106; and that of hot coiled springs N>=104~105;

b) Infinite fatigue life: The load cycle times of cold coiled springs N>=107; and that of hot coiled springs N>=2×106.

When the load cycle times of cold coiled springs is between 106 and 107, and that of hot coiled springs is between 105 and 2×106, the design of finite or infinite fatigue life may be referred to according to the service conditions.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 38 pages — is available in the English PDF.

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Editions of GB/T 23935

Edition	Title	Revision	Status
GB/T 23935-2009	Design of cylindrical helical springs	current edition	Current
GB/T 1239.6-1992	Design of cylindrical helical springs	previous edition	Superseded

This page sells the current edition, GB/T 23935-2009. Earlier editions are listed for reference only.

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